空气氧化法生产硫酸铜

介绍空气氧化法生产硫酸铜的方法。通过实验得到硫酸浓度、硫酸铜含量、鼓风量对稀硫酸与铜的反应速度的影响，找到了空气氧化法生产硫酸铜的工艺条件?并在工业生产中得到了验证。     

铜粉直接空气氧化法生产硫酸铜的工艺研究

本文主要研究铜粉直接空气氧化法生产硫酸铜的工艺条件,并提出相应的工业生产方法。     

液相空气氧化生产硫酸铜过程的控制

为实现液相空气氧化法硫酸铜的稳定生产，运用数学分析手段由后向前逐一推导了过程中各点的目标参数，并提出了酸解操作线方程式。在此基础上，提出了对该过程的控制方法，该法检测手段简便，实施容易     

空气氧化分步浸出海绵铜制备硫酸铜

用空气氧化、催化、氨—碳铵分步浸出海绵铜的工艺来制备纯度较高的硫酸铜     

液相空气氧化生产硫酸铜过程的控制

为实现液相空气氧化法硫酸铜的稳定生产，运用数学分析手段由后向前逐一推导了过程中各点的目标参数，并提出了酸解操作线方程式。在此基础上，提出了对该过程的控制方法，该法检测手段简便，实施容易。     

空气氧化酸浸法生产硫酸铜

天津市物资回收公司熔炼厂在用铜毛丝制取硫酸铜(CuSO_4·5H_2O)过程中,采用直接空气氧化酸浸法取代原用炉反射焙烧氧化酸浸法,缩短了工艺流程,节约了原材料和燃料,提高生产效率一倍以上。一、空气氧化酸浸原理金属铜—废铜毛丝,在稀硫酸中不能直接溶解,鼓入空气后,空气中的氧将铜毛丝氧化     

低压一步法制备硫酸铜的研究

目前国内外生产硫酸铜的传统方法[1]有以下几种:(1)高温焙烧氧化法;(2)浓硫酸溶解法;(3)硝酸溶解硫酸置换法;(4)双氧水氧化法;(5)液相空气氧化法.     

催化空气氧化法制备工业硫酸铜工艺的研究

研究了催化空气氧化法制备工业硫酸铜的方法及工艺条件,在空气流速尽可能大,硫酸浓度为20%,反应温度80℃,催化剂用量为10 g/L,反应时间4 h时,可得到比较理想的反应效果,粗产品经除杂后结晶,可得到符合国家二级品标准的工业硫酸铜。     

空气氧化法制备硫酸铜工艺改进

以静态混合器作为溶铜装置的供氧系统,对空气氧化法制备硫酸铜工艺进行了改进。大大提高了溶铜速率和氧气利用率,并且降低了能耗。同时还研究了新工艺条件下,温度、气体流量对工艺指标的影响。     

偏苯三酸酐生产工艺及安全技术分析

比较了生产偏苯三酸酐的3种方法芳香醛水溶液空气氧化(MGC)法、硝酸氧化法和液相空气氧化法.介绍了液相空气氧化法的生产工艺流程,对该法生产过程中的介质危险、过程危险进行了剖析,提出了保障偏苯三酸酐安全生产的具体措施.     

用海绵铜为原料生产试剂纯硫酸铜

分析探讨了以矿山出产的海绵铜为原料 ,经化学分离 ,提纯制得高纯铜粉 ,再进一步氧化、合成生产出试剂级的硫酸铜的工艺原理、方法、流程和经济效益 ,该法对中小企业开发有关产品有一定的参考价值。     

糖精钠生产中含铜废酸水制硫酸铜工艺技术的开发

本文介绍了利用糖精钠生产过程中产生的含铜废酸水制备硫酸铜的最新技术,并对焙烧氧化、酸化、浓缩、结晶等过程的工艺条件进行了详细讨论,确定了最佳工艺条件。     

中空玻璃镀膜层化学变性的研究

金属铜镀膜层在空气层中的水、氧气和二氧化碳的作用下转变为碱式碳酸铜,进一步与来自多硫聚合物的二氧化硫作用,生成亚硫酸铜,最后被空气中的氧气氧化为硫酸铜,造成腐蚀,使镀层化学性能发生变化。这是一个中空玻璃金属镀膜层化学变性的实例。     

Influence of oxygen and copper concentration on lipid oxidation in rapeseed oil

The influence of oxygen concentration and copper on lipid oxidation in rapeseed oil during storage at 40°C was investigated. The oil was stored in air, or with 1.1%, 0.17%, or 0.04% oxygen in the headspace, and 70 or 0.07 ppm copper was added. Volatile oxidation products and oxygen consumption were monitored. Addition of 70 ppm copper to the sample in air resulted in a 70-fold higher hexanal concentration after 35 d of storage, compared to the sample without added copper. The addition of 0.07 ppm copper to the sample stored in air gave a doubled hexanal concentration, compared to the sample without copper, after 35 d of storage. For the samples with 70 ppm copper at 0.17% and 0.04% oxygen, all oxygen was consumed after 7 d of storage. The results show the importance of minimizing the oxygen available for oxidation, especially when pro-oxidants are present. In the sample with 70 ppm added copper, in air, the hexanal increase was 65 times larger than for the same sample in 0.04% oxygen. A comparison of the effect of oxygen or copper on oxidation shows that the addition of 70 ppm copper to the 0.04% oxygen sample gave the same increase in hexanal content as an oxygen increase to 0.17%.     

Insight into spent caustic treatment: on wet oxidation of thiosulfate to sulfate

Oxidation of thiosulfate to sulfate is often the rate controlling step during wet air oxidation (WAO) of spent caustic from the refinery and petrochemical industry and exhibits high Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). The kinetics of WAO of thiosulfate was studied in the absence and presence of a heterogeneous copper catalyst. Wet oxidation of thiosulfate to sulfate is a free radical reaction exhibiting an induction period. In non‐catalytic oxidation, almost complete conversion of thiosulfate to sulfate was observed in 12 min at 150 °C and in 8 min at 120 °C in the presence of a heterogeneous copper catalyst at 0.69 MPa oxygen partial pressure. The presence of phenol accelerated thiosulfate oxidation. © 1999 Society of Chemical Industry     

空气氧化法生产醋酸铜

介绍了在空气氧作用下,由铜屑和醋酸直接反应生产醋酸铜的方法。通过试验得到了醋酸浓度、鼓风量、铜屑量及液空速等条件对反应速度的影响,确定了工艺流程和反应条件,并进行了工业化生产。     

Electrodeposition of copper on thermally oxidized 316 L stainless steel substrates

The effect of thermal oxidation of 316 L stainless steel cathode blanks used in copper electrodeposition was studied. Current and potential step experiments were performed to evaluate electrochemical changes caused by the oxidation treatments. SEM and AES were used to characterize the stainless steel substrates and the deposited copper films. Particular emphasis was given to the initial stages of copper nucleation and growth. The copper electrocrystallization process was strongly influenced by the temperature employed in oxidizing the stainless steel. Dense, uniform and fine copper nuclei were obtained on the stainless steel substrate oxidized in air at 200°C and 300°C for 3h. The copper nucleation density and uniformity decreased considerably on substrates treated at 500°C and 600°C. Attempts were made to identify changes in the mechanism of copper nucleation on the various oxidized stainless steel substrates using models developed by Thirsk and Harrison.     

镍铜废渣联产硫酸镍硫酸铜氧化铁红工艺研究

介绍了利用冶炼后镍、铜废渣生产工业硫酸镍、硫酸铜、氧化铁红的生产过程。采用加压氧化原理，在高温高压的条件下，通过控制操作条件，首先将镍选择性地从矿渣中强化浸出，然后再把铜浸取出来，保留终渣三氧化二铁。回收渣中的镍、铜，回收率达98．4％。实验结果表明产品质量达到国家优等品标准。